WO2006034790A1 - Brennstoffzellensystem und verfahren zum betreiben eines brennstoffzellensystems - Google Patents
Brennstoffzellensystem und verfahren zum betreiben eines brennstoffzellensystems Download PDFInfo
- Publication number
- WO2006034790A1 WO2006034790A1 PCT/EP2005/010027 EP2005010027W WO2006034790A1 WO 2006034790 A1 WO2006034790 A1 WO 2006034790A1 EP 2005010027 W EP2005010027 W EP 2005010027W WO 2006034790 A1 WO2006034790 A1 WO 2006034790A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cathode
- fuel cell
- cell system
- heat exchanger
- inlet
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
- H01M8/04141—Humidifying by water containing exhaust gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the invention relates to a fuel cell system and to a method for operating a fuel cell system, wherein the fuel cell system has at least one fuel cell and a cathode inlet supplying the cathode feed and a cathode outlet discharging the cathode outlet.
- a fuel cell system is known for example from the generic DE 195 48 297 C2.
- the cathode supply must be cooled again to a required operating temperature range. In conventional systems, this is done by a through-flow of cooling water heat exchanger.
- the object of the invention is to provide a fuel cell system and a method for operating a
- This object is achieved in that it is provided that the cathode inlet compressed Kathodenzu Kunststoff is supplied and that a heat exchanger is flowed through by a warmer cathode feed and a colder cathode exhaust gas.
- an additional cooling capacity is made possible by the cooling of the cathode feed air by means of a heat exchanger through which colder cathode exhaust gas flows.
- the cathode exhaust gas is heated to a temperature above 100 degrees Celsius, thereby preventing or reducing condensate formation.
- the additional cooling power also allows a smaller dimensioning of the conventional cooling circuit of the vehicle. Furthermore, at low ambient temperatures by avoiding the formation of condensation in the exhaust of the vehicle resulting in ice formation on roads is avoided.
- the cathode exhaust gas is passed after the cathode outlet in a gas / gas humidifier through which flows Kathodenzu Kunststoff which is arranged in the flow direction before the cathode inlet or after the cathode outlet, whereby the humidity of the cathode exhaust gas is reduced.
- a second heat exchanger through which a colder cooling medium flows is arranged downstream of the first heat exchanger in the flow direction of the cathode feed air.
- the second heat exchanger is preferably integrated into the cooling circuit of the vehicle.
- the second heat exchanger allows a further cooling of the cathode feed air, which is why the first heat exchanger can thereby be dimensioned smaller.
- the dependence on the amount and temperature of the cathode exhaust gas with respect to the temperature of the cathode feed to the cathode inlet is reduced.
- first and the second heat exchanger are arranged adjacent to each other in such a way that results in an advantageously compact design.
- Fig. 1 shows the schematic structure of a
- FIG. 2 shows the schematic structure of a
- FIG. 3 shows the schematic structure of a
- Fuel cell system with two heat exchangers in a compact design Fuel cell system with two heat exchangers in a compact design.
- Figure 1 shows the structure of a fuel cell system as it can be used for example in a vehicle.
- the fuel cell system shown has a compressor 1 for ambient air, a heat exchanger 2, a gas / gas humidifier 3 and a fuel cell 4.
- the fuel cell 4 is here representative of a fuel cell stack, in which a plurality of fuel cells are electrically connected in series.
- the fuel cell 4 consists of an anode 5 and a cathode 6, which are separated by a proton permeable and electrically non-conductive proton exchange membrane 7.
- the anode 5 is supplied via the anode inlet 8 hydrogen as fuel.
- the cathode 6 is supplied via the cathode inlet 9 with oxygen or air as the oxidant.
- the amount of the supplied air is controlled by the compressor 1.
- the spent cathode exhaust gas is passed through a cathode outlet 10 through the gas / gas humidifier 3 in the heat exchanger 2. From there, the cathode exhaust gas is discharged through, for example, an exhaust to the environment.
- the cathode feed and the cathode off gas have a temperature in the range of 70 to 90 degrees Celsius.
- the cathode exhaust gas is heated by about 180 degrees Celsius when entering the heat exchanger 2 cathode hot air to over 100 degrees Celsius and the cathode feed cooled accordingly.
- the heat exchanger 2 should be dimensioned in the illustrated fuel cell system so that the temperature of the cathode inlet before the gas / gas humidifier 3 corresponds approximately to the temperature of the cathode exhaust gas after the gas / gas humidifier 3.
- a second heat exchanger 11 is shown - is flowed through by a supply line 12 and a discharge line 13 from a cooling medium, preferably cooling water from the cooling circuit of the vehicle.
- the temperature of the cathode feed air before the gas / gas humidifier 3 should correspond approximately to the temperature of the cathode waste gas downstream of the gas / gas humidifier 3.
- FIG. 3 shows the components of FIG. 2, wherein the first heat exchanger 2 and the second heat exchanger 11 are arranged adjacent to one another in a form favorable for a compact design.
- the illustrated arrangement is only one example of a compact design.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004046922.9 | 2004-09-28 | ||
DE102004046922A DE102004046922A1 (de) | 2004-09-28 | 2004-09-28 | Brennstoffzellensystem und Verfahren zum Betreiben eines Brennstoffzellensystems |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006034790A1 true WO2006034790A1 (de) | 2006-04-06 |
Family
ID=35445693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/010027 WO2006034790A1 (de) | 2004-09-28 | 2005-09-16 | Brennstoffzellensystem und verfahren zum betreiben eines brennstoffzellensystems |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004046922A1 (de) |
WO (1) | WO2006034790A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8216728B2 (en) | 2007-01-22 | 2012-07-10 | Daimler Ag | Device for treating reaction gases in fuel cells |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007003240B3 (de) * | 2007-01-22 | 2008-09-04 | Daimler Ag | Rückkühlungs- und Befeuchtungseinrichtung in Brennstoffzellen |
DE102008016372A1 (de) | 2008-03-29 | 2009-10-01 | Daimler Ag | Brennstoffzellensystem für Kraftfahrzeuge |
DE102008048894A1 (de) | 2008-09-25 | 2010-04-01 | Daimler Ag | Brennstoffzellensystem und Verfahren zum Betreiben eines solchen |
DE102011109383A1 (de) | 2011-08-04 | 2013-02-07 | Daimler Ag | Ladeluftkühler für ein Brennstoffzellensystem |
DE102011120545A1 (de) | 2011-12-08 | 2013-06-13 | Daimler Ag | Vorrichtung zur Bereitstellung von Energie |
DE102012018874A1 (de) * | 2012-09-25 | 2014-03-27 | Daimler Ag | Brennstoffzellensystem |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5360679A (en) * | 1993-08-20 | 1994-11-01 | Ballard Power Systems Inc. | Hydrocarbon fueled solid polymer fuel cell electric power generation system |
DE19606665A1 (de) * | 1996-02-23 | 1997-08-28 | Aeg Energietechnik Gmbh | Anlage zur Erzeugung elektrischer Energie mit Festoxidbrennstoffzellen |
US20020006537A1 (en) * | 2000-05-30 | 2002-01-17 | Tomoki Kobayashi | Gas-supplying apparatus, gas-supplying mechanism and gas-supplying process in fuel cell |
DE10152311A1 (de) * | 2001-10-26 | 2003-05-15 | Audi Ag | Brennstoffzellensystem mit einer Brennstoffzellenabgas-Wasserrückgewinnungseinrichtung |
EP1463135A1 (de) * | 2003-03-27 | 2004-09-29 | Nissan Motor Co., Ltd. | Brennstoffzellensystem |
-
2004
- 2004-09-28 DE DE102004046922A patent/DE102004046922A1/de not_active Withdrawn
-
2005
- 2005-09-16 WO PCT/EP2005/010027 patent/WO2006034790A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5360679A (en) * | 1993-08-20 | 1994-11-01 | Ballard Power Systems Inc. | Hydrocarbon fueled solid polymer fuel cell electric power generation system |
DE19606665A1 (de) * | 1996-02-23 | 1997-08-28 | Aeg Energietechnik Gmbh | Anlage zur Erzeugung elektrischer Energie mit Festoxidbrennstoffzellen |
US20020006537A1 (en) * | 2000-05-30 | 2002-01-17 | Tomoki Kobayashi | Gas-supplying apparatus, gas-supplying mechanism and gas-supplying process in fuel cell |
DE10152311A1 (de) * | 2001-10-26 | 2003-05-15 | Audi Ag | Brennstoffzellensystem mit einer Brennstoffzellenabgas-Wasserrückgewinnungseinrichtung |
EP1463135A1 (de) * | 2003-03-27 | 2004-09-29 | Nissan Motor Co., Ltd. | Brennstoffzellensystem |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8216728B2 (en) | 2007-01-22 | 2012-07-10 | Daimler Ag | Device for treating reaction gases in fuel cells |
Also Published As
Publication number | Publication date |
---|---|
DE102004046922A1 (de) | 2006-03-30 |
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